PROCESS AND PRODUCTS OF PURIFICATION OF ANHYDROSUGAR ALCOHOLS

A process for the formation of a purified anhydrosugar alcohol is disclosed, whereby the resultant purified anhydrosugar alcohol has a purity of at least 99.8 % and is substantially colorless. The anhydrosugar alcohol is purified by distillation, recrystallization from methanol, ethanol or ethylene...

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Bibliographische Detailangaben
Hauptverfasser:	WOHLERS, MICHAEL, RIETH, JOCHEN, KVAKOVSZKY, GEORGE, CHARBONNEAU, LARRY F, WITTELER, HELMUT B, SHOCKLEY, THOMAS H, KOHLE, NORBERT, HUBBARD, MICHAEL A, ZEY, EDWARD G
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRODUCTION OF SUCROSE SEPARATION SUGAR INDUSTRY THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	A process for the formation of a purified anhydrosugar alcohol is disclosed, whereby the resultant purified anhydrosugar alcohol has a purity of at least 99.8 % and is substantially colorless. The anhydrosugar alcohol is purified by distillation, recrystallization from methanol, ethanol or ethylene glycol, melt recrystallization, or a combination thereof. Preferably, the purificati on is by distillation followed by recrystallization from methanol, ethanol or ethylene glycol. A test for determining the purity of the anhydrosugar alcoh ol is disclosed, wherein the color of the anhydrosugar alcohol after annealing at a temperature of at least 260 ~C for at least four hours is examined. Alternatively, purity can be determined by examination of ultraviolet (UV) transmittance of the purified anhydrosugar alcohol at various wavelengths. T he purified anhydrosugar alcohol may be incorporated into a polymer such as a polyester, which may in turn be used to form such articles of manufacturing as containers, optical disks, fibers, sheets and films.